In reply to UKC Videos:
Meanwhile a sweaty punter has been wearing the other UKC Proton LT for some snowy hillwalking. Apologies for no hard sends, but come on - balancing along the top of Striding Edge is pretty cool isn't it?
https://photos.app.goo.gl/ubW44uR2gS6QcTdf8
https://photos.app.goo.gl/oyiCRps2UEuEaomn7
More seriously, an interesting bit of kit - it really isn't very windproof but I suppose that's sort of the point, and once you put a shell over it it's really warm. There was plenty of sweat on the inside of my goretex as I laboured up hill in soft snow with both on but I think that's a good sign, the Proton LT seems to hold no moisture at all.